import { describe, it, expect } from 'vitest';
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { TaskNoteList } from '@app/features/tasks/ui/task-note-list/task-note-list';

describe('TaskNoteList', () => {
  let component: TaskNoteList;
  let fixture: ComponentFixture<TaskNoteList>;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      imports: [TaskNoteList],
    }).compileComponents();

    fixture = TestBed.createComponent(TaskNoteList);
    component = fixture.componentInstance;
    fixture.componentRef.setInput('notes', []);
    fixture.detectChanges();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('should render empty state when no notes', () => {
    const empty = fixture.nativeElement.querySelector('.note-list__empty');

    expect(empty).toBeTruthy();
    expect(empty.textContent).toContain('No notes yet');
  });

  it('should render notes list', () => {
    fixture.componentRef.setInput('notes', ['Note 1', 'Note 2', 'Note 3']);
    fixture.detectChanges();

    const items = fixture.nativeElement.querySelectorAll('.note-list__item');

    expect(items.length).toBe(3);
  });

  it('should render note content', () => {
    fixture.componentRef.setInput('notes', ['My first note']);
    fixture.detectChanges();

    const content = fixture.nativeElement.querySelector('.note-list__content');

    expect(content?.textContent).toContain('My first note');
  });

  it('should have list role for accessibility', () => {
    const list = fixture.nativeElement.querySelector('.note-list');

    expect(list.getAttribute('role')).toBe('list');
  });

  it('should have aria-label on list', () => {
    const list = fixture.nativeElement.querySelector('.note-list');

    expect(list.getAttribute('aria-label')).toBe('Task notes');
  });

  it('should emit addNote with content', () => {
    const spy = vi.fn();
    component.addNote.subscribe(spy);

    component.onAddNote('New note');

    expect(spy).toHaveBeenCalledWith('New note');
  });

  it('should not emit addNote when content is empty', () => {
    const spy = vi.fn();
    component.addNote.subscribe(spy);

    component.onAddNote('   ');

    expect(spy).not.toHaveBeenCalled();
  });

  it('should emit deleteNote with index', () => {
    const spy = vi.fn();
    component.deleteNote.subscribe(spy);

    component.onDeleteNote(2);

    expect(spy).toHaveBeenCalledWith(2);
  });

  it('should have delete button with aria-label', () => {
    fixture.componentRef.setInput('notes', ['Test note']);
    fixture.detectChanges();

    const deleteBtn = fixture.nativeElement.querySelector('.note-list__delete');

    expect(deleteBtn.getAttribute('aria-label')).toBe('Delete note: Test note');
  });
});